This is part of my recently revived take-good-care-of-your-MB project...

This oil leak has been going on since I bought the 240D two years ago (in a much lesser fashion since I installed two screw clamps on both ends where the breather hose attaches to its ports.) Please see photo depicting the problem in one of the previous posts in this thread.

This is luckily the ONLY oil leak in my engine... The oil comes out, notwithstanding the large screw clamp, from the upper breather hose connection (see photo) and travels all the way down along the engine walls, and then drips on the pavement of my garage. What I don't understand and perhaps someone here might be able to explain, is: why is oil coming out of the breather hose opening (at the upper elbow) when just air/hot gases is supposed to travel from there to the lower intake port at the air filter to be then burned in the engine? I keep my engine oil level never above midway between the upper and lower marks on the dipstick, and often keep it lower than that, just because of THIS problem (I found out that keeping more oil in the engine worsens this issue - more oil gets expelled from the breather hose upper elbow connection...)

What do you think this means and how do you think it can be fixed?

Rino

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1979 240D, W123, 105K miles, stick, white w/ tan interior.